Rolling mill



F. A, BEATTY ROLLVING MILL May 12, 1936.

Filed NOV. 20, 1933 2 Sheets-Sheet 1 F. A. BEATTY May 12, 1936 ROLLING MILL Filed Nov. 20, 1933 2 Sheets-Sheet 2 I gww Patented May 12, 1936 UNITED STATES PATENT OFFICE ROLLING MILL Application November 20, 1933, Serial No. 698,757

1 Claim.

My invention relates to metal rolling and, in particular, to the rolling of sheet material.

The practice of hot rolling sheets in a so-called hand mill by the addition of mechanical feeding and catching devices, such as tilting tables, has now become quite general. It is with such operations that my invention is concerned and its particular object is to provide means for properly directing material being discharged from a mill on to the feeding or catching table, as the case may be. Obviously, the feeding and catching tables cannot extend into the pass between the rolls since they must be short enough to swing up and down past the face of the upper roll. There exists, therefore, a gap between the roll pass and the ends of the tables so that the material issuing from the mill might be discharged below the table intended to receive it, instead of running out on top of the table. My invention prevents this occurrence and insures that the issuing material is discharged flatwise onto the table intended to receive it.

In accordance with my invention, I provide strippers supported on the mill housings and extending across the mill rolls in contact therewith adjacent the exit from the roll pass. The strippers are positioned so as to guide material directly on to the handling tables, precluding all possibility of misdirection of the metal being rolled.

For a complete understanding of the invention, reference is made to the accompanying drawings illustrating a present preferred embodiment. In the drawings:

Figure 1 is a sectional view taken longitudinally through a mill having the invention applied thereto, parts being shown in elevation and parts being shown diagrammatically;

Figure 2 is a sectional view along the line IIII of Figure 1; and

Figure 3 is a sectional view along the line IIII[I of Figure 2.

Referring in detail to the drawings, a mill Ill (in the illustrated example a three-high mill) has housings H providing suitable bearings for rolls I2, l3 and 14. It is well known in the metal rolling art to make sheets by feeding bars edgewise back and forth through a three-high mill of the type shown, first, between the bottom and middle rolls and then back between the middle and top rolls. It has been found that the use of mechanical handling tables greatly accelerates the rate of production of sheets according to this method. Feeding and catching tables l5 and I6 are partially illustrated, somewhat diagrammatically, in Figure 1. These tables are generally short chain conveyors on frames adapted for tilting movement from a position in alinement with the pass between the bottom and middle rolls, to a position in alinement with the pass between the middle and top rolls. The alternative positions of the 5 tables are shown in chain lines in Figure 1.

In tilting from lower to upper position or vice versa, it is apparent that the ends of the tables I 5 and [6 must clear the middle roll l3. It is impossible, therefore, to have the ends of the tables 10 project very far into the passes between the bottom and middle, and middle and top rolls. As a result, it was frequently found in practice that the material issuing from one of the roll passes was not properly directed on to its receiving table but became deflected below the level thereof. This seriously interrupted continuous production of the mill, of course, to say nothing of the injury to the material itself.

In order to avoid the conditions described above, I provide strippers on both sides of a three-high mill to insure that the material issuing therefrom is guided from the pass exit to the end of the table and maintained at the proper level therebetween to insure the movement of the material along the desired path. On the catching side of the mill (the right-hand side in Figure 1), I provide a stripper including a yoke II comprising side plates l8, a cross bar l9, and a stripper plate 20. The side plates [8 are ivoted to the mill housings on bolts 2i and are adjustable angularly thereon, being held releasably by clamping screws 22 working in slots 23 in the outer ends of the plates. The cross bar l9 and the stripper plate 20 join the inner ends of the side plates. The stripper plate is so shaped and positioned as to extend edgewise into the mill pass substantially to the exit therefrom, and has a sharp edge engaging the periphery of the bot tom roll.

It will be apparent from an inspection of Figure 1 that when the tables l5 and I6 are in the lower (solid line) position, material fed to the mill from table [5 will be entered into the pass and, after being reduced in the mill, will engage the stripper plate 20 with its leading end so that the latter is maintained at the proper level for entry upon the catching table Hi. It will be understood that the entry of the material into the mill does not involve any difficulty since the direction of roll rotation is such as to carry the leading end of the material up and into the pass. On the discharge side, however, the rolled material tends to follow the downward movement of the bottom roll, aided by its own weight, and it is the funcincluding side plates 25 pivoted at 26 to the mill housings, a cross bar 21 and a stripper plate 28,

all the parts being arranged in somewhat the same relation as already described for the stripper on the catching side. The stripper on the feeding side, however, is not clamped in adjusted position. The feather edge of the stripper plate thereof is yieldingly maintained in firm engagement with the periphery of the middle roll adjacent the exit of the pass between the middle and top roll by spring cushions 29. Each spring cushion 29 is attached to the mill housings and is connected to the outer angularly disposed ends of the side plates 25.

The guide rolls 30 are carried by the side, plates 25 in such position as to cooperate with the stripper plate 24 in supporting material issuing from the mill until the leading edge thereof has passed the inner end of the, feeding table as the latter 1 receives the material.

Although I have illustrated the invention as applied to a three-high mill, it will be apparent that it may also be utilized in connection with other mills, for example, the ordinary two-high hot mill, in which case the strippers would cooperate with the bottom and top rolls instead of with the bottom and middle rolls, as described in the present instance showing the application of the invention to the three-high mill. The details of construction of the feeding and catching .tables are, of course, immaterial to the present invention and have, therefore, not been disclosed specifically. The invention is capable of use, however, with any of the feeding and catching tables which have been devised heretofore for cooperation with sheet mills.

I have illustrated and described herein one preferred-embodiment of the invention. Numerous changes in the construction described will no doubt occur to those skilled in the art. Any such changes may, of course, be made without departing from the spirit of the invention or the scope of the appended claim.

a I claim:

The combination with a rolling mill and feeding and catching tables .for handling material toward and from the mill, of a stripper carried on the mill comprising sideplates pivotally attached to the mill housings providing an unobstructed space therebetween adapted to receive the mill end of one of said tables, and a narrow stripper plate extending between said side plates substantially .in alinement with the top of one of the mill rolls for deflecting material moving thereover on to the table positioned to receive it, the dimension of the plate measured along the path of material traversing the mill being less than the radiusof the roll it engages. V

FLOYD A. BEA'I'TY. 

